science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: nitric acid					Other Names: hydrogen nitrate

Formula: HNO3						CAS-No.: 7697-37-2	PubChem: CID 944

Study: uv absorption cross sections

                
Authors: O. Rattigan, E.R. Lutman, R.L. Jones, R.A. Cox

Title: Temperature dependent absorption cross sections and atmospheric photolysis rates of nitric acid

Journal/Source: Ber. Bunsenges. Phys. Chem., 96, 399-404, (1992); DOI: 10.1002/bbpc.19920960331


Data: diagram, table

Energy/Wavelength range: 220 - 330 nm

Resolution: 0.3 nm

Temperature: 239 K; 295 K

Temperature dependence: yes

Pressure/Concentration: 

Phase: vapor

pH:


Comments: Absorption cross-sections for HNO3 have been measured in the wavelength region 220–340 nm, using a dual-beam 
diode array spectrometer, with a spectral resolution of 0.3 nm. The results at room temperature were in good agreement with 
earlier measurements. Absorption over most of the wavelength range showed a distinct temperature dependence, with a decline 
in cross-section with decreasing temperature in the range 295-239 K.

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